Method of producing a lid device for wide-mouthed container

Details Method of producing a lid device for wide-mouthed container Method of producing a lid device for wide-mouthed container

1991-04-18

1992-09-15

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Simultaneous severing and shaping, or severing while work...

264265, 264266, 264273, 264279, 264316, B29C 4503, B29C 4514

Patent

active

051475910

ABSTRACT:
A method for producing a lid device for a wide-mouthed container which comprises a lid body having an opening of a predetermined shape, and a closure member made of a soft synthetic resin for closing the opening of the lid body. According to the method, the lid body and a vapor impervious film are placed between a first mold body and a second mold body with the film located on the side of the second mold body. The first mold body has a closure forming cavity, whereas the second mold body has a tab forming cavity. A fluid synthetic resin is injected under pressure from the side of the first mold body to fill the closure forming cavity. The resin is caused to break through the film to fill the tab forming cavity, thereby forming a pull tab integral with the closure member.

REFERENCES:
patent: 3184096 (1965-05-01), Cheeley
patent: 3196485 (1965-07-01), Battenfeld et al.
patent: 3494500 (1970-02-01), Foster
patent: 3773888 (1973-11-01), Ruekberg
patent: 4674649 (1987-06-01), Pavely
patent: 4865793 (1989-09-01), Suzuki et al.

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